Ford Global Technolgoies, LLC

Ford Motor Company Limited

Richard Charles Kosik

Prakash Tuljaram Thawani

Mukesh Kumar

Steven Otis Pate

Hemant Sumentlal Shah

William F Sanderson, Jr

John Wang

John Stuart Hollingshead

The present invention is a system and method to significantly reduce noise associated with air-moving devices such as an axial flow fan using a fan shroud and barrel combination with built in silencers such as Helmholtz resonators. The invention can be applied to a variety of applications such as a thermal management system for a fuel cell powered vehicle. The resonator can be a hollow cavity in networks attached to an outer or inner barrel or shroud and tuned to reduce noise at predetermined noise frequency ranges within the airflow. The invention can also attach stator members on the inner surface of the outer barrel to further reduce noise. Additional sound absorbing material, such as steel wool, can be disposed within the resonator cavity.

Fan shroud with built in noise reduction

The amount of regenerative braking that is applied to the wheels ( ) of a vehicle ( ) is based on ambient temperature and a lift-throttle event. An ambient temperature sensor ( ) monitors the temperature around the vehicle. Based on the temperature, a map is selected ( ). If a lift-throttle event occurs, then the map is applied ( ). Compression regenerative braking is reduced to zero if an anti-lock braking system event occurs or if the throttle is re-applied, or both ( ).

Temperature compensated lift-throttle regenerative braking

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Plymouth, MI, United States of America

Richard Charles Kosik